• 국제학술발표논문집
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• The 5th International Conference on Construction Engineering and Project Management
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• pp.328-331
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• 2013

Incentive/Disincentive (I/D) contracting experiences in many states have been evaluated in terms of time and cost performance and substantial project time savings were found in many project cases. However, there is little understanding on individual project success factors for I/D projects during construction. This paper explores the significance of I/D clause in the success of the MacArthur Maze reconstruction project and summarizes a list of group causes that explains and elaborates on the detailed factors. The methods used for carrying out this study started with a search of online media and news reports and contract documents were also obtained from Caltrans. After review of the preliminary information, Interviews were performed with the Caltrans Resident Engineer and the contractor's project manager who were in charge of the MacArthur Maze reconstruction. In conclusion, the evaluation of their responses hinted at six significant cause groups responsible for the project's success. These groups can be listed as: 1) Motivation, 2) Policy, 3) Teamwork, 4) Communication, 5) Expectation, and 6) Resource Management.

• Industrial Engineering and Management Systems
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• 제13권4호
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• pp.383-397
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• 2014

Reverse logistics network design issues have been popularly discussed in recent years. However, few papers in the past literature have been dedicated to incentive effect on return quantity of used products. The purpose of this study is to formulate a dynamic nonlinear programming model of reverse logistics network design with the aim of managing the used products allocation by coordinating the collection centers and recovery facilities to warrant economic efficiency. In the optimization model, a fuzzy approach is applied to interpret the relationship between the rate of return and the suggested incentives. Due to funding constraints in setting up the collection centers, this work considers these centers as multi-capacity levels, which can be opened or closed at different periods. In view of the fact that the problem is known as NP-hard, we propose a heuristic method based on tabu search procedure to solve the presented model. Finally, several dominance properties of optimal solutions are demonstrated in comparison with the results of a state-of-the-art commercial solver.

• International Journal of Advanced Culture Technology
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• 제7권3호
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• pp.97-102
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• 2019

This study suggests a solution of an incentive system from the viewpoint of the external effect on the renting of firefighting qualifications and on rental agencies. Currently, the Human Resources Development Service of Korea does not have a penalty for neglecting to perform a search into qualification lending and rental agencies. In the short term, the penal clause should be strengthened so that companies and qualification holders cannot borrow or lend their qualifications. In addition, the Human Resources Development Service of Korea will increase the number of personnel dedicated to investigating the loaning of qualifications. It is necessary for the government to establish a penalty for neglecting to investigate the lending of qualifications for the Human Resources Development Service of Korea. In the long term, the state needs to make only minimal regulations. Also, the state needs to make companies and qualification holders feel like they benefit more when they are not borrowing or lending qualifications. The anticipated effect of this study is that the government will intervene appropriately by applying firefighting qualifications according to market principles. It can also be used as a basis for the revision of related laws on the renting of national technical qualification certificates and the investigation of rental agencies.

• 경영과학
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• 제25권3호
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• pp.87-99
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• 2008

Besieged by needs for upgrading the current Internet, social pressures, and regulatory concerns, a network operator may be left with few options to Improve his services. Yet he can still consider a transition prioritizing network services. In this paper, we describe a transition from a non-priority system to a prioritized one, using non-preemptive M/G/1 model. After reviewing the constraints and theoretical results from past research, we describe steps making the transition Pareto-improving, which boils down to a multi-goal search for a Pareto-improving state. We use a genetic algorithm that captures actual transition costs along with incentive-compatible and Pareto-Improving constraints. Simulation results demonstrate that the initial post-transition solutions are typically Pareto-improving. for non Pareto-improving solutions, the heuristic quickly generates Pareto-improving and incentive-compatible solutions.

• 노동경제논집
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• 제23권2호
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• pp.39-59
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• 2000

본 논문에서는 현실적으로 실업보험급여가 수급기간별로 차등지급되기 어렵다는 전제하에 가장 바람직한 실업급여체계가 어떠한 것인가를 분석하고 있다. 특히 법정수급기간과 소득대체율이 실업자들의 구직유인과 소득안정에 대해 미치는 영향을 파악하고, 이에 따라 사회후생을 극대화시킬 수 있는 법정 수급기간 및 소득대체율의 조합을 분석하고 있다. 아울러 본 모형을 통해 적정 실업급여체계를 결정하는 여러 가지 요인들을 도출하고, 그에 의거하여 앞으로 우리나라의 고용보험제도의 개혁 방향을 제시하고 있다.

• 한국의류학회지
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• 제31권12호
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• pp.1721-1732
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• 2007

본 연구는 온라인 의사결정과정에서 온라인 쇼핑속성, 정보원 및 구매의도와 관련된 소비자 정보탐색의 경로모델을 밝히고자 하였다. 연구대상은 미국 남서부지역의 대학교에 재학중인 대학생으로 표본으로 설문조사 하였으며, 총 219명의 이용 가능한 자료가 수집되었다. 자료분석을 위해 요인분석과 LISREL8.53을 이용하여 경로분석을 실시하였다. 연구결과, 소비자의 온라인 의복구매를 위한 정보원은 온라인 정보원, 소매점 정보원, 대중매체의 세 가지 유형으로 분류되었다. 특히, 온라인 의복구매를 위해 소매점 정보원(점포내 디스플레이, 제조업체의 팜플렛 또는 카달로그)을 더 많이 이용하는 것으로 나타났다. 추정된 경로모델을 살펴보면, 온라인 쇼핑속성의 중요도가 정보탐색에 유의한 영향을 미쳤다. 특히 온라인 의복 구매시, 소비자의 온라인 정보원 이용은 거래관련속성 즉 구매유인서비스(incentive service)에 의해 가장 크게 영향을 받는 반면, 소매점 정보원 이용은 심미성, 가격 등의 제품 및 시장관련속성의 중요도에 의해 더 크게 영향을 받는 것으로 나타났다. 또한 소비자의 세가지 탐색유형 모두 구매의도에 정적인 효과를 보이고 있었으며, 다른 정보원에 비해, 소매점 정보원 이용이 온라인 의복구매의도에 가장 큰 효과를 보였다. 따라서, 본 연구는 온라인 쇼핑속성별 소비자의 차별화된 정보탐색 패턴이 온라인 구매의도를 증가시키고 있음을 확인함으로써, 의류제품의 멀티채널 소매전략(Multi-channel retailing) 방향이 논의되었다.

• 노동경제논집
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• 제37권1호
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• pp.29-57
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• 2014

본고는 실업급여와 생애적 차원에서 소비균등화를 도모할 수 있는 대출을 이용하여 근로자에게 실직에 따른 소득감소 보전 및 실직위험에 대한 보험을 효과적으로 제공하는 소득보장 체계를 제시한다. 특히 대출 상환을 추후 근로자 소득과 연계시키는 소득연계식 대출(ICL)과 실업급여를 통해 실직자들의 구직유인 감퇴 효과를 최소화하면서 상태별 혹은 동태적 소비균등화를 효율적으로 도모할 수 있는 실업보조 제도를 분석한다. 또 본고는 소득연계식 대출이 실업자 소득보장 제도뿐 아니라 여타 복지 프로그램에도 적용될 수 있는 일반적인 정책수단이 될 수 있음을 지적하고, 따라서 ICL이 최근의 복지서비스 수요 증대에 효과적으로 대응할 수 있는 새로운 복지정책 패러다임으로서 기능할 수 있음을 밝힌다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제18권8호
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• pp.2157-2177
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• 2024

Demand response (DR) refers to the customers' active reaction with respect to the changes of market pricing or incentive policies. DR plays an important role in improving network reliability, minimizing operational cost and increasing end users' benefits. Hence, the integration of DR in the microgrid (MG) management is gaining increasing popularity nowadays. This paper proposes a day-ahead MG scheduling framework in conjunction with DR and investigates the impact of DR in optimizing load profile and reducing overall power generation costs. A linear responsive model considering time of use (TOU) price and incentive is developed to model the active reaction of customers' consumption behaviors. Thereafter, a novel multi-swarm sine cosine algorithm (MSCA) is proposed to optimize the total power generation costs in the framework. In the proposed MSCA, several sub-swarms search for better solutions simultaneously which is beneficial for improving the population diversity. A cooperative learning scheme is developed to realize knowledge dissemination in the population and a competitive substitution strategy is proposed to prevent local optima stagnation. The simulation results obtained by the proposed MSCA are compared with other meta-heuristic algorithms to show its effectiveness in reducing overall generation costs. The outcomes with and without DR suggest that the DR program can effectively reduce the total generation costs and improve the stability of the MG network.

• Industrial Engineering and Management Systems
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• 제6권1호
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• pp.55-63
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• 2007

Exchange of information is essential to the process of innovation such as product development. However, in many cases innovation fails because of a lack of knowledge sharing among parties concerned, even if parties individually have pieces of useful knowledge and skills. Besides physical factors like communication costs, the possibility of opportunistic behavior by parties like stealing ideas can discourage information exchange. This paper introduces a model to analyze incentives of information exchange. The model is a game by two players who alternately opt to offer information to the partner. It is suggested that information exchange can stop before reaching the efficient level. In order to attain the efficient information exchange, expectation of mutual benefit and absence of opportunistic motives in both players are needed. Methods for promoting information exchange include modifying payoff structure to meet the condition of information exchange. The fluidity of partnership may increase a variety of information exchange partners, but discourage building trust between partners which promotes information exchange.

• 노동경제논집
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• 제27권1호
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• pp.77-105
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• 2004

본고는 저축을 통한 자가보험이나 실업급여가 현실적으로 제한되어 있는 상황에서 실직자에게 실업급여뿐 아니라 미래 연금을 담보로 한 대출을 허용하는 새로운 실업자 보호 제도를 제시하고 그 실증적 효과성을 패널자료에 의해 분석하고 있다. 이 제도는 실직자들이 미래 소득을 담보로 대출을 받아 효과적 자가보험을 갖도록 함으로써 실업급여에 비해 구직유인을 유지하게 할 뿐 아니라 소비 균등화 및 실직위험 부담 완화를 꾀할 수 있도록 한다. 본고는 경제활동인구조사에 근거한 1998~2002년 패널자료를 이용하여 시뮬레이션하였고 그 결과 기존 실업급여제도 하에서 보조를 받고 있는 저학력 계층도 실업급여보다는 연금담보 대출을 더 선호한다는 사실을 보고하고 있다. 이 결과는 연금담보 대출의 소비 균등화 및 구직유인 강화에 의한 후생증대 효과가 매우 강력함을 시사하고 있으며, 제한적인 효과밖에 갖지 못하는 기존 실업급여제도를 대체할 수 있는 새로운 실직자 보호정책 대안이 될 수 있음을 보여주고 있다.